408-8649 Datasheet, PDF (1/7 Pages) Tyco Electronics – This instruction sheet covers Die Packages used in PCB Singulation systems.

PCB Singulation Systems
Die Packages
Instruction Sheet
408-8649
22 JUL 08 Rev A
Upper Die
Assembly
Lower Die
Assembly
PCB Singulation Systems Press
Figure 1
1. INTRODUCTION
This instruction sheet covers Die Packages used in
PCB Singulation systems.
The dies contain bushings and perforators which
remove breakaway tabs from a printed circuit board
array.
NOTE
i
Dimensions in this document are in metric units
[with U.S. customary units in brackets] unless
otherwise specified.
Reasons for reissue of this instruction sheet are
provided in Section 8, REVISION SUMMARY.
2. DESCRIPTION
The die packages are manufactured to specific
length, width, and height (opening) requirements
which are determined by PCB Singulation
(depaneling) systems press in which it is to be used.
Refer to 409–10031 for information concerning the
press.
The maximum dimensions are 558.8 mm [22 in.] long,
508.0 mm [20 in.] wide, and 114.3 mm [4.5 in.] high
and can weigh up to 49.89 kg [110 lbs].
Each die package contains two major assemblies: the
lower assembly (die block); and the upper assembly
(punch holder). See Figure 1.
The bottom assembly contains bushings which
support the pc board. The bushings have profiled
holes through which the perforators (punches) cut the
breakaway tabs.
NOTE
i
Carrier trays are available which set down over
the bushings below the printed circuit board
panel. After singulation, the tray captures the
individual circuit boards and panel scrap for easy
removal.
The upper assembly contains the perforators
(punches) which cut the breakaway tabs. The
assembly also contains either hold down pins or a
solid stripper plate with transfer pins (pressure pins).
Both methods hold the board during the cutting
process and during the retraction of the perforators
from the bushings.
NOTE
i
Solid stripper plates are usually the standard.
However, hold down pins are used when there
are not enough component free areas to use a
solid stripper plate. Hold down pins require less
clamping area to properly trap the board.
Solid stripper plates and hold down pins both extend
2.54 mm [.100 in.] past the tips of the perforators.
E2008 Tyco Electronics Corporation, Harrisburg, PA
All International Rights Reserved
TE logo and Tyco Electronics are trademarks.
*Trademark. Other products, logos, and company names used are the property of their respective owners.
This controlled document is subject to change.
For latest revision and Regional Customer Service,
visit our website at www.tycoelectronics.com
1 of 7
LOC B